6. Reliability Condition
6-1. Key Pad
6-1-1. Button’s motion and life test: After 300k times of the condition of
hiiting,the item should not be stuck.
6-1-2. Contacting Resistance: After pressing key in the weight of 500g,the
item’s persistence should be under 500Ω
6-2. Pad Set
6-2-1. Rolling test A: After Rolling 3.5 times under the condition of 50 ,℃
85% for 72 hours, the item should work.
6-2-2. Rolling test B: After rolling 10,000 times while holding one side of
the item, the item should work.
6-2-3. Eraser test: After rubbing 1,500times with an eraser(500g), the
item's print material shouldn't be erased.
6-2-4. Alcohol test: After scrubbing 250times with Methyl alcohol(99.3%) in
the weight of 500g, the item's print material shouldn't be erased.
6-2-5. Heat test: After keeping under the condition of -40 and +85℃℃for
an hour and repeat the same test 15 times, the item should work.
6-2-6. Bending test: After bending 10,000 times at the angle of 180°, the
items should work.
6-2-7. Rubber stretching test: After stretching for 1 minute in the weight of
3Kg, the item should satisfy all Spec conditions.
DSGD APPD CHKD Audit
G.H Bang Y.H Kim Y.H Kim 2003.02
model Title
FX-200 USB Product Specification